Anchor-bolt.



G. & H. KLAHRE.

ANCHOR BOLT.

APPLICATION FILED NOV. 16, 1907. RENEWED FEB. 5,1909.

Patented Apr. 13, 1909.

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LT @FFTQE.

ANCHOR-BUILT.

Specification of Letters Patent.

I Patented April 13, 1909.

Application filed November 16, 1907, Serial No. 402,363. RenewedFebruary 5, 1909. Serial No. 476,814.

To all wlwm it may concern:

Be it known that we, GUSTAV KLAHRE and HENRY Kmnnn, citizens of theUnited States, residin in Chicago, county of Cook, and State of llinois, have invented certain new and useful Improvements in Anchor-Bolts, of which the following is a specification.

Our invention relates to anchor bolts and the object of our invention isto provide an anchor bolt which may be inserted throu h a hole in thewall or ceiling of but slight y greater size than required for thepassage of the nut therethrough.

Afurther object ofour invention is to provide ah anchor block which maybe readily and quickly ap lied to bolts of various sizes and of any stocform.

A further object of our invention is to rovide an anchor bolt havin ananchor b ock which will readily adjust itself after havin been passedthrough a or the ceiling.

A further object of our invention is to provide an anchor bolt which maybe tightened without drawing back on the bolt as is necessary with thosenow on the market of which we are aware.

Other objects will appear hereinafter.

Our invention will be more readily understood by reference to theaccompanying drawings forming a part of this specification and in which,

Figure 1 is an elevation of an anchor bolt embodying our invention inits preferred form, and illustrating the same in the position it assumesin being passed through a hole in the ceiling, 2 is a view similar toFig. 1 illustrating the position the block assumes after having passedthrough the hole, Fig. 3 is a similar view illustrating the blockresting in position, Fig. 4 is a side elevation showing the position theblockassumes after having been passed through a horizontal hole asthrough a wall, Fig. 5 is an end view of the bolt in the position shownin Fig. 4, and Fig. 6 is an end view of the block.

Referring to the drawings, 1 indicates a bolt of any ordinary orpreferred form having the usual nut, 2. The anchor block compr1ses amember, U shaped in cross section and having parallel side walls whichare but sli htly wider apart than the diameter of the b0 t. The wallsare partially cutaway to accommodate the nut when the block is eitherhole in either the wall 1 in alinement with the bolt or at right anglesthereto and a tongue extends from one side I of the cut away portion toprevent separation of the bolt and the block after having been assembledexcept by removing the bolt from the nut.

Referring again to the drawings, 3 indicates the anchor block. Thiscomprises the parallel side walls, 44 and the curved base or connectinwall, 5 together forming a U shaped mom r as shown clearly in Fig. 6.The walls 4 and 5 are cut away forming a double L shaped aperturecomprising a transverse portion 7 extending through the walls 4 and 5and a longitudinal portion 6 in each of the side walls 4 at right anglesto the 5 overhanging the portions 6 of the aperture forming a tongue 8.The portion 6 accommodates the nut :2 when in one or looking ponut whenthe device is being passed through the hole in the wall or ceiling. Whenthe block is turned into the position shown in Fig. 1, the bolt, 2 liesbetween the parallel walls, 4 and the distance between the walls 4, ispreferably but slightly greater than the diameter of the bolt, to theend that the device may be inserted through a hole of minimum size. Theend of the portion of the curved wall, 5 overhanging the aperture, 6,and formi a tongue, 8, rests upon the upper face of the nut, 2, when thedevice is being inserted through a hole in the ceiling. The tongue isbent slightly outward and as soon as the device passes above the ceilingit drops into the position shown in Fig. 2, the end, 9 acting as a pivotu on which the block swings. The bolt ma t en be dropped into left untilready for use. The tongue, 8 is provided with 'ana erture, 10 to receivethe end of the bolt, 1 w on being tightened. To better accommodate thenut, when the anchor block is inalinement with the bolt, the walls, 4,are slightly flared as at 11 opposite the aperture, 7 in the curvedwall, 5,.

The cut away portion or aperture, 67 is arranged to one side of thecenter of the block in order that one end of the block shall beconsiderabl heavier than the other. This is partiou arly desirable whenthe device is being inserted through a hole in a side wall, as itpermits the bolt to be tightened without drawing back thereon as is nownecessary with anchor bolts of this class such as sition, and theportion 7 accommodates the the position shown in ig. 3, where 1t may beportion 7. This leaves a portion of the wall are on the market atpresent. The nut, 2 is arranged diagonally in the aperture portion, 7,and when the bolt is insertedthrough a hole in the wall, the block dropsinto the position shown in Fig. 4 with the nut arranged diagonally inthe portion, 6, and the end of the walls, 12 of the aperture resting onthe inclined sides of the nut, thebolt may then be tightened withoutbeing drawn back to bring the block in contact with the inner surface ofthe wall, as the unbalanced block will prevent the nut from turning asthe bolt is screwed up.

It is obvious that a bolt of any ordinary or preferred construction canbe used with the anchor block described, the size of the bolt beinglimited only by the distance be; tween the walls, 4 and the recesses orapertures, 6 and 7. To apply the block to a bolt, the nut is placeddiagonally withinthe apertureafter which the bolt may be screwedthereinto. After the parts are assembled the nut is locked within theapertures in the block by the bolt.

Having described our invention what we claim as new and desire to secureby Letters Patent is:

1. An anchor bolt-consisting in an ordinary bolt having the usual nut,in combination with an anchor block, said anchor block comprising a pairof parallel side walls and a curved connecting wall forming a member.

U shaped in cross section said side and connecting wall having a doubleL shaped aperture comprising a transverse portion in said curved walland longitudinal portions in said side walls and ada ted to receive thenut of the bolt when the b ock is both at right angles to the bolt andin alinement therewith, substantially as described.

2. An anchor block comprising a pair of parallel side walls and a curvedconnecting wall together forming a member having a U tending over saidaperture, substantially as described. I

3. In an anchor bolt, an anchor block comprising a pair of parallel sidewalls and a curved connecting wall forming a member with a-U'shapedcross section, said side and connecting walls being cut away to form anaperture to receive the nut of a bolt and an apertured'tongueoverhanging said aperture, substantially as described.

4. In an anchor bolt, an anchor block comprising a pair of parallel sidewalls and a curved connecting wall forming a member with a U shapedcross section, said side and connecting walls being cutaway to form anaperture to receive the nut of a bolt and an outwardly curved tongueextendim from said curved wall and overhanging said aperture,substantially as described.

5. In an anchor bolt, an anchor block comprisin a pair of parallel sidewalls and a curve connecting wall'together forming a member havin a Ushaped cross section, each of said si e walls being longitudinallyapertured and said curved wall being transversely aperturedand'togetherv forming a single double L shaped recess to receive the nutof a bolt, the portion of the side walls opposite the transverse portionof the recess 01' aperture being outwardly curved substantially asdescribed.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

GUSTAV KLAHRE. HENRY KLAHRE.

